NVS Partition Parser Utility

[中文]

Introduction

The utility nvs_flash/nvs_partition_parser/nvs_read.py loads and parses an NVS storage partition for easier debugging and data extraction. The utility also features integrity check which scans the partition for potential errors.

Encrypted Partitions

This utility does not support decryption. To decrypt the NVS partition, please use the NVS Partition Generator Utility which does support NVS partition encryption and decryption.

Usage

The utility provides six different output styles with -d or –dump option:
  • all (default) - Prints all entries with metadata.

  • written - Prints only written entries with metadata.

  • minimal - Prints written namespace:key = value pairs.

  • namespaces - Prints all written namespaces

  • blobs - Prints all blobs and strings (reconstructs them if they are chunked).

  • storage_info - Prints entry states count for every page.

Note

There is also a none option which will not print anything. This can be used with the integrity check option if the NVS partition contents are irrelevant.

The utility also provides an integrity check feature via the -i or –integrity-check option. This feature scans through the entire partition and prints potential errors. It can be used with the -d none option which will print only the potential errors.